Sdbot.LHR

It spreads and affects other computers.
It searches for and steals passwords saved for certain Windows services.
It carries out actions that decrease the security level of the computer.
It uses stealth techniques to avoid being detected by the user.
It uses anti-monitoring techniques in order to prevent it being detected by antivirus companies.
It does not spread automatically using its own means.

Affected platforms:

Windows 2003/XP/2000/NT/ME/98/95

First detected on:

Oct. 22, 2007

Detection updated on:

Oct. 22, 2007

Statistics

No

Proactive protection:

Yes, using TruPrevent Technologies

Brief Description

Sdbot.LHR is a worm that spreads by copying itself, without infecting other files.

It captures certain information entered or saved by the user, with the corresponding threat to privacy:
passwords saved by certain Windows services.

It reduces the security level of the computer:
it terminates processes belonging to security tools, such as antivirus programs and firewalls, leaving the computer defenseless against attacks from other malware; it listens on open ports in order to control the computer remotely.

It uses stealth techniques to avoid being detected by the user:

It terminates processes corresponding to several security tools, such as antivirus programs and firewalls, to prevent detection.

It deletes the original file from which it was run once it is installed on the computer.

It uses several methods in order to avoid detection by antivirus companies:

It terminates its own execution if it detects that it is being executed in a virtual machine environment, such as VMWare or VirtualPC.

It terminates its own execution if it detects that a debugging program is active.

Sdbot.LHR does not spread automatically using its own means. It needs an attacking user's intervention in order to reach the affected computer. The means of transmission used include, among others, floppy disks, CD-ROMs, email messages with attached files, Internet downloads, FTP, IRC channels, peer-to-peer (P2P) file sharing networks, etc.